Shoe upper



FIG. 1 is a front perspective view of a shoe upper showing my new design;

FIG. 2 is a lateral side view thereof; and,

FIG. 3 is a rear perspective view thereof.

The broken line immediately adjacent to the shaded region represents an unclaimed boundary of the design. The broken line showing of the remainder of the shoe is for environmental purposes only and forms no part of the claimed design. 

The ornamental design for a shoe upper, as shown and described. 